19875642308 has 12 divisors (see below), whose sum is σ = 34785051840. Its totient is φ = 9937056072.

The previous prime is 19875642301. The next prime is 19875642323. The reversal of 19875642308 is 80324657891.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19875642308.

It is not an unprimeable number, because it can be changed into a prime (19875642301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130688 + ... + 238391.

It is an arithmetic number, because the mean of its divisors is an integer number (2898754320).

It is a 1-persistent number, because it is pandigital, but 2⋅19875642308 = 39751284616 is not.

Almost surely, 2^19875642308 is an apocalyptic number.

It is an amenable number.

19875642308 is a deficient number, since it is larger than the sum of its proper divisors (14909409532).

19875642308 is a wasteful number, since it uses less digits than its factorization.

19875642308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382546 (or 382544 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

Adding to 19875642308 its sum of digits (53), we get a square (19875642361 = 140981²).

The spelling of 19875642308 in words is "nineteen billion, eight hundred seventy-five million, six hundred forty-two thousand, three hundred eight".